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- /*
- * $Header: /files1/home/toy/src/stat/RCS/total.c,v 1.5 90/09/01 17:15:13 toy Exp $
- * NAME
- * total - sum total of vectors
- *
- * SYNOPSIS
- * total [vectors...]
- *
- * DESCRIPTION
- * Output is the sum total of the elements of the input
- * vector(s).
- *
- * HISTORY
- * $Log: total.c,v $
- * Revision 1.5 90/09/01 17:15:13 toy
- * Some more lint removal.
- *
- * Revision 1.4 90/09/01 17:02:27 toy
- * Use message function to print out messages.
- *
- * Revision 1.3 90/09/01 11:25:49 toy
- * Changed option characters.
- *
- * Revision 1.2 90/08/31 15:55:46 toy
- * Forgot to initialize total when we want a grand total.
- *
- * Revision 1.1 90/08/31 14:51:54 toy
- * Initial revision
- *
- */
-
- #include <stdio.h>
-
- #if defined(__STDC__) || defined(__GNUC__)
- #include <stddef.h>
- #include <stdlib.h>
- #endif
-
- #include "gps.h"
-
- #define DEF_PROGNAME "total"
-
- static const char RCSID[] = "@(#) $Id: total.c,v 1.5 90/09/01 17:15:13 toy Exp $";
-
- extern int getopt ();
- extern int optind;
- extern char *optarg;
-
- const char *progname;
-
- #define OPT_STRING "HTP:"
-
- void
- help ()
- {
- (void) fprintf (stderr, "%s\n", RCSID);
- (void) fprintf (stderr, "Usage: %s [-HT] [-P prec][vector ...]\n", progname);
- (void) fprintf (stderr, "\t-H\tThis help\n");
- (void) fprintf (stderr, "\t-T\tGrand total of all vectors listed\n");
- (void) fprintf (stderr, "\t\t(otherwise, print result for each vector)\n");
- (void) fprintf (stderr, "\t-P p\tSet number of significant digits to p\n");
- }
-
-
- #if defined(__STDC__) || defined(__GNUC__)
- double
- do_total (FILE * fp)
- #else
- double
- do_total (fp)
- FILE *fp;
- #endif
- {
- int rc;
- double x;
- double sum;
-
- sum = 0;
-
- do
- {
- rc = get_number (fp, &x);
- if (rc == 1)
- {
- sum += x;
- }
- else if (rc == 0)
- {
- message ("Error reading number\n");
- }
- } while (rc == 1);
-
- return sum;
- }
-
- int
- main (argc, argv)
- int argc;
- char *argv[];
- {
- int option;
- int total_sum;
- double sum;
- double total;
-
- progname = get_my_name (argv[0], DEF_PROGNAME);
-
- /*
- * Read options
- */
-
- total_sum = FALSE;
- while ((option = getopt (argc, argv, OPT_STRING)) != -1)
- {
- switch (option)
- {
- case 'H': /* Help */
- help ();
- exit (0);
- break;
- case 'T': /* Grand total of all vectors */
- total_sum = TRUE;
- break;
- case 'P': /* Precision */
- (void) set_precision (atoi (optarg));
- break;
- default:
- break;
- } /* endswitch */
- } /* endwhile */
-
- /*
- * If no files are listed, use stdin. Otherwise use
- * the given files
- */
-
- if (optind == argc)
- {
- print_number (stdout, do_total (stdin));
- }
- else
- {
- total = 0;
- while (optind < argc)
- {
- if (freopen (argv[optind], "r", stdin) == NULL)
- {
- message ("Cannot open `%s'\n", argv[optind]);
- }
- else
- {
- sum = do_total (stdin);
- if (total_sum)
- {
- total += sum;
- }
- else
- {
- print_number (stdout, sum);
- }
- }
- optind++;
- } /* endwhile */
-
- if (total_sum)
- {
- print_number (stdout, total);
- }
- } /* endif */
-
- end_column (stdout);
- return 0;
- }
-